Fuel System Flashcards
Where pylons can be installed?
2, 5
The booster pump is housed in
The flight sump
The flight sump contains fuel for
20 to 23 sec neg g at max throttle
FUEL SHUT-OFF VALVE is powered by
Essential bus
How long does it take to dump fuel?
2 min for 3/4
6 min for 1/4
Fuel dump allows to dump fuel contained in
Tip tanks
FUEL DUMP system is alimented by
Essential bus
Fuel qty is collected by sensors in the tanks and is sent to
EDAB for showing on MFDs
When fuel qty goes below the selected bingo, what happens in the cockpit?
Fuel warning audio message
MASTER CAUTION light
In SYS format, the fuel is displayed in amber background
F. TRANS turns on when
When fuel transfer rate is below normal values
Fuel qty in fuselage tank is 500 +30/-20kg, w/ at least 45kg in tip tanks
F. LOW turns on when
Fuselage tank below 210+-20kg (F34)
Fuel used for 339CD is
NATO F-34
F. UNBAL turns on when
60kg for 12 sec
The error in fuel measurement from sensors is
+-15kg and 2% of the indication
The unusable fuel in tip tanks is
10kg
Minimum fuel qty in each tip tank is
10kg (they are considered empty)
Nominal density F-34
0.803 kg/dm3
Name of the Air refueling nozzle
MA-2 standard
How many inlet valves are there in the fuel system?
3
How many vent/safety valves are there?
1
How valves are open/close during air to air refueling?
By pushing the AR/ON/FAIL push button they are open
They close automatically as the selected qty of fuel is reached or if the air refueling switch is put back to off
When does the probe nozzle valve open?
At the contact w/ basket, allowing fuel to flow